Machine for shaping uppers over lasts



Feb. 5, F924. C. F. PYM

MACHINE FOR SHAPING UPPERS OVER LASTS ori inail Filed Aug; 13, 1919 sSheets-Sheet 1 Feb. 5, 1924, 1,482,410

. C. F. PYM

MACHINE FOR SHAPING 'UPPERS OVER LASTS Original Filed Aug. 13. 1919 ssheet's-sheet '2 c. F. PYM

MACHINE FOR SHAPING UPPERS OVERLASTS Original Filed Aug. 13, 1919 3Sheets-Sheet 5 Patented Feb. 5, 1924.

UNI-T ED STAT-Es PAT" Y *CHARIJES F. P-YIVL. OFQLYNNZ MASSAUHUSETTS,ASSIGN'OR TO UNITED. SHOE MACHIN- ERY CORPORATION, OFPATERSON,NEWJERSEY, A CORPORATION OF NEW JERSEY.

MACHINE lFOR;SH-APING UPPERS OVER LASTS.

Applicationfiled August-'13, 1919, SeriaIYNo. 317,302. Renewed September27, 1922. Serial No. 591,000.

To. (iZZ whom it may concern:

Be it'known thatI, CHARLES F. PYM, a subject of the Kingof England,residing at Lynn, in the county ofEsseX and State of Massachusetts, haveinvented certain Improvements in Machines 'for Shaping-Uppers'OverLasts, ofwh'ich the "following de-, scription in connection withthe-accompanying drawings, is a specification, like referencecharacterson the drawingsindicating likeiparts in: the several figures.

This invention relates to machines for shaping uppers over lasts, andmore particularly to means for operating on'the end portion of a boot orshoeto conform it to the contour of the last or equivalent shoe r'o-rm.

The invention is herein illustrated by reference to its use in a machinefor pulling over a shoeand for lasting the toe portion of the shoe; butit is to be understood thatthe invention in its broader aspects is notrestricted in utility to machines for performing both pulling-over andlasting operations norto mechanismspecifically designed for toe lasting.

An objectof the invention is to provide an improved construction of endlasting mechanism. including end. embracing wipers the operation ofwhich is so effected and controlled asto insure uniformly good resultsirrespective of variations inthecharacter orposition of the work. Theinvention is herein shown as incorporated in a type of machineillustrated in Letters Patent No. 1,436,194granted upon myapplication-on Nov. 21, 1922; and in one aspect the presentinventionprovides an improvement in lasting mechanism of thegeneral-type disclosed in said patent, although itwill be recognizedthat the invention is by no means limited. in its applicability to thatparticu lar' type of machine.

A feature of the invention consists in a novel construction andarrangement of wiper mechanism including wiper closing means which isrendered operative in ,response to pressure or resistance of the work.In the construction shown closing movement laterally of the shoe isimparted to the wipers inresponse toresistance encountered by the edgesof thewvipersuponengagement with the uppermaterials in their advancingmovement lengthwise of the shoe, the'wipers being bodily yieldable'relatively to their support which continues its movement and by suchmovement. operates through gearing connections to clos the wipers. Thewipers are thus self-adjustable to the shoe, and uniform results areinsured under varying conditions, In order further to insure uniformityin the action of the wipers upon different portions of the upper.materials round the end of the shoe, the invention provides controllingmeans constructed to cause the wipers to close into substantialconformity to the contour of the edge of the shoe bottom, in response tothe resistance encountered, before they become effective with anysubstantial overwiping action at the end of the shoe, and then to wipethe upper inwardly atthe end andat the opposite sides of the end portionof the shoe substantially simultaneously.

Important advantagesare involved in the use .of the invention in a typeofmachine like that herein shown in which pullingover and lastingoperations take place in sequence and in which it is of particularimportance thatthewipers secure-effective control of the tensioned upperbefore the latter.- is released by the pulling means, and a furtherfeature of the invention consist-sin the novelcombination thus provided.

The above and other features of the invention, including certain detailsof construction and combinations of parts, will now be more particularlydescribed with reference to the accompanying drawings and pointed out inthe claims.

In th drawings,

Figure l is a view in side elevation, and partly in vertical section,ofa portion of a machine of the type shown in the patent above mentioned,including toe lasting mechanismconstructed in accordance with thisinvention;

.Fig. 2 is a plan view of the toe lasting mechanism detachechwith aportion of the structure broken away Fig. 3 isan inverted plan view ofthe mechanism shown in Fig. 2, and

Fig. .4 is a section on theline 4 of Fig. 3. y V

H he machine shownicomprises grippers for engaging the upper at the toeendof the last and at opposite sides otthe forepart, the toe gripper 2only being shown in the drawings,'since it is this gripper which isintito grip and pull the upper by means of their updraw levers, the toegripper lever being shown at 10 in Fig. 1, and as the grippers areoperated the sole rest 4, together with the members 6 and 8, is swungdownwardly a short distance by the action of a cam 12 to supplement thepulling action of the grippers, the heel rest 14 meanwhile being movedupward into supporting position at the heel end of the shoe. The machinethen comesv automatically to rest withthe upper held under tension.

Upon a subsequent starting of the machine shoe clamping and supportingdevices 16 are moved into operative relation to the fore part of theshoe and operative movement is imparted to the end lasting mechanism.This mechanism is mounted on the lower end of a front arm 18 pivoted at20 on the frame of the machine and connected to an operating slide 22whereby the arm is swung rearwardly adefinite distance to cause thelasting mechanism to assume control of the tensioned upper and toperform the lasting operation; Thelasting mechanism comprises endembracing wipers 24 which are connected together to swing relativelyabout a pivot 26, shoe end embracing members 28 mounted on pivots 30 onthe lower side of the wipers in position to embrace the end of the shoeand to serve as supports for a lasting binder a; positioned betweenthese members and the wipers, and driver plates 32 pivotally' connectedto the wipe-rs and arranged to close inwardly'between the wipers and themembers 28 to force the binder into holding relation to the upper and todrive its inturned ends into the shoe. Springs 34 arranged to l-earoppositely against the members 28 and the driver plates 32 tend to forcethese members inwardly and the driver plates outwardly to limitsdetermined by pins 36 which are carried by the wipers and engage inslots 38 and 40 formed respectively in the members 28 and the driverplates 82. As the wiper mechanism is moved toward the shoethe members 28are permitted to yield outwardly against the tension of the springs 34in conformity to the shape of the shoe and may serve finally to limitthe overwiping movement of the wipers. Operative movement is imparted tothe driver plates 32 to apply the binder to the shoe and fasten it bymeans of swinging driver arms 42 conne'ited by links 44 to bell cranks46, the latter being operatively connected to the outer end of the slide22.

The lasting mechanism as a whole is mounted on a support 48 connected bymeans of a pivot '50 tothe lower end of the arm 18 -in such manner asto'permit the wipers to yield upwardly against abnormal resistance.Asthe arm' 18 isswung rearwardly by the slide 22 the wipers are causedto perform their function as will" be hereinafter explained more indetail, the grippers being tripped automatically to cause them torelease their hold upon the upper and the members 6 and 8 beingwithdrawn from 0P1 erative position to permit the wipers to close overthe shoe. The tripping of the toe gripper is effected by engagement of aplate on the arm 18 with a pivoted tripping member 51. When the wipershave arrived substantially at their limit of operative movement, theslide 22 is swung downwardly and operates the driver plates 32 to applythe binder and fasten it, after which the Parts are returned to theirstarting positions and the shoe is released. In these various generalfeatures the construction may be and is herein shown as substantiallylike the construction shown and described in the prior patent to whichreference may be made for a more definite understanding of the differentdetails.

For the purposes of this invention, the wipers 24, together with theshoe embracing members 28 and the driver plates 32, are

supported on a plate 52 which serves as a wiper carrier and is slidablein guideways formed by downwardly projecting side portions of thesupporting bracket 48, the wipers being mounted detachably on gearsegments 54 which slide in are shaped guide- "*5 ways in the plate 52 todetermine the path of closing movement of the wipers about their pivot26. Springs 56 which bear oppositely against the plate 52 and lugs 58 onthe bracket 48 tend to move thesliding plate 119 52 forwardly along itsguideways as far as permitted by pins 60 which are fast on the bracket48 and engage in slots 62 in the plate 52. The gear segments 54 areoperatively engaged by pinions 64 mounted to turn about pivots 66 on theplate 52, these pinions being operatively engaged in turn by pinions 68which are likewise pivotally mounted on the plate 52. In operativeengagement with the pinions 68 are rack bars 70 mounted in guidewaysbetween the bracket 48 and the plate 52 and normally held in stationaryrelation to the bracket 48 by means of springs 72 which are adjustablyheldbetween set screws 74 in lugs 76 on the bracket and the enlargedouter end portions of the rack bars 70 which have limiting engagementwith the edge of the bracket. Mounted also on the plate 52 is a finger 78 which serves as additional means to support 339 the wire binder and isyieldable backwardly against the resistance of a spring 80 upon itsengagement-with-the end face of the shoe. 7

The plate 52 and its supported mechanism are held normally by thesprings 56, as shown in the drawings, in an advanced position relativelyto thebracket 48, the wipers 24: being held in their outwardly retractedor open position by means of the rack and pinion mechanism hereinbeforedescribed. When operative movement is imparted to the arm 18 to carrythe lasting mechanism toward the shoethe parts-remain in these relativepositions until thewipers come into engagement with the end of the upperwhich at this time is held by the grippers intensionedconditionovAs-soon as the resistance of the work thus encountered overcomes theresistance of the comparatively light springs 56-, movement of the plate52 and the wipers lengthwise of-the shoe retarded, and the supportingbracket 48 in its continued movement serves by means of the rackbars-TO,which are under the control of the comparatively strong springs 72, toturn the pinions 68 and 64; and thus to impart swinging-movement to thegear segments 54 to close the wipers inward laterally of the shoe'.-Preferably the wipers are positioned normally a sufficient distance inadvance of the arm 18 to cause them to be closed into substantialconformity to the contour ofthe' edge of theshoe bottom before thegrippers are tripped to release the upper, the closing movement of thewipers into this position being effected under control of the springs56, prior to any substan tial overwiping action of the wipers at theextreme end of the shoe by reason of the comparatively heavy resistanceopposed by the tensionedupper to the continued bodily movement of thewipers lengthwise of the shoe. As soon as the wipers have thus beenclosed about the end of the shoe they begin to close inwardly over themargin of the sole at the opposite sides by reason of continued movementof the support 48 relatively to the plate 52, the decrease in resistanceto advancing bodily movement of the wipers upon the release ofthe upperby the grip pers permitting the plate 52 to be advanced gradually at thesame. time by the increasing tension of the springs 56 and by forcetransmitted indirectly to said plate from the forward thrust of the rackbars depending uponthe resistance encountered by the wipers at the sidesof the toe, to cause the wipers to wipe the upper inwardly also at theextreme end of the shoe. Practically therefore the overwiping operationis effected substantially simultaneously at all points round the endportion of the shoe, whether the upper materials are heavy orlight incharacter. If the wipers, however, complete their over-wiping operationat the end of the shoe prior to the completion of their lateral closingmovement the heavy resist ance thusencountered limits their furtherbodily movement lengthwise of the shoe and causes the closing movementof the wipers to be accelerated until they complete the overwipingoperation at the sides. If, on the other hand, the wipers are closedinward laterally of the shoe as far as permitted by the shoulder of thesole or by the members 28 before completing their operative 1nove-Inentat the end of the shoe, t-he springs 7* permit a relative yieldbetween the bracket 48 and the rack bars 70 and thus permit thewipers'to advance without further closing movement or even to be forcedlaterally outward against the tension of these springs by the resistanceof the shoe materials. When the arm 18 receives its outward "returnmovement after the overwiping and fasteningoperations have beenperformed, the springs 56 react and return the plate 52 and the wipersto their starting positions illustrated in the drawings;

lVhile the invention is herein illustrated by reference to its use inthe manufacture of a turn shoe, it will be understood that it is notlimited in utility to the manufacture of shoes of this particular type.

Having described the invention, what I claim as new and desire tosecure'by Letters Patent of the United States is:

1. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for closing movementlaterally of theshoe, means for moving said wipers bodily lengthwise ofthe shoe to operate them, and closing mechanisms for the respectivewipers operative each independently of the other in response to theresistance to said lengthwise movement of the wipers encountered byengagement of the wipers with the shoe materials to impart to saidwipers their lateral closing movement.

2. in a machine of the class described, the combination with shoepositioning means, of a wiper support, means for moving said supportlengthwise of the shoe, end embracing wipersmovably mounted on saidsupport to permit the support to move relatively to the wiperslengthwise of the shoe inresponse to resistance to the advancingmovement of the wipers encountered by engagement of the wipers with theshoe materials, said wipers being also mounted forolosing movementlaterally of the shoe, and means operated by the movement of the supportrelatively to the wipers in response to resistance encountered by theedges of the wipers to impart said lateral closing movement to thewipers.

3'. In amachine of the class described, the combination with shoepositioning means, of

a wi er su ort means for movin said su 7 b port lengthwise of the shoe,end embracing wipers mo ably mounted on said support to permit thesupport to move relatively to the wipers lengthwise of the shoe inresponse to resistance to the advancing movement of the wipersencountered by engagement of the wipers with the shoe materials, thewipers being also mounted for closing movement laterally of the shoe,means operated by the movement of the wiper support relatively to thewipers to impart said lateral closing movement to the wipers, andyielding means tor controlling the relative movement between the wipersand the wiper support constructed and arranged to cause the wipers to beclosed inwardly into substantial conformity to the contour of the edgeoi the shoe bottom in response to the resistance to their advancingmovement prior to any substantial overwiping action. of the wipers atthe end of the shoe.

4;. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for bodily movementlengthwise of the shoe and also for closing movement laterally of theshoe, and independent gearing tonnections for the different respectivewipers operative in response to resistance to advancing movement of thewipers encountered by engagement of the edges of the wipers with theshoe mate rials to close the wipers inwardly into sub stantialcontormity to the contour of the edge of the shoe bottom prior to anysubstantial overwiping action at the extreme end of the shoe and then toclose them farther inwardly during their overwiping action at the end ofthe shoe.

In a machine of the class described, the combination with shoepositioning means, ot end embracing wipers mounted for closing movementlaterally of the shoe, means [tor moving said wipers bodily lengthwiseor the shoe, closing mechanisms for the different respective wipersoperative each independently of the other in response to resistanceencoun tered by the edges of the wipers in said lengthwise movement toclose them inward laterally ot' the shoe, and controlling means to causethe wipers to be closed into substantial conformity to the contour ofthe edge of the shoe bottom in response to such resistance before theybecome effective with any substantial overwiping action at the end ofthe shoe and then to wipe the upper inward at the end and the oppositesides of the end portion of the shoe substantially simultaneously.

G. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for closing movementlaterally of the shoe, means for effecting relative movement of saidshoe positioning means and wipers in a direction lengthwise of the shoeto cause the wipers to operate on the shoe, and closing connections forthe different respective wipers operative each independently ot' theother in response to the resistance to such relative movementencountered by engagement of the edges of the wipers with the shoe toimpart to the wipers their lateral closing movement.

'7. In a machine of the class described, the combination with shoepositioning means, of a wiper support, end embracing wipers on saidsupport mounted for closing movement laterally of the shoe, means forei'fecting relative movement of said shoe positioning means and wipersupport in a direction lengthwise of the shoe to cause the wipers tooperate on the shoe, the wipers being bodily yieldable relatively to thesupport in response to resistance encountered by their engagement withthe shoe, and means responsive to such yield of the wipers to impart'tothem their lateral closing movement.

8. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for closing movementlaterally of the shoe, means for moving said wipers bodily lengthwise ofthe shoe to operate them, controlling means to permit said wipers toyield bodily against advancing movement lengthwise of the shoe inresponse to resistance of the shoe materials and then to continue theiradvancing movement as the resistance is overcome, and intermeshingtoothed members relatively movable in response to such bodily yield ofthe wipers to impart to said wipers their lateral closing movement.

9. In a machine of the class described, the combination with shoepositioning means, of a wiper support, means for moving said supportlengthwise of the shoe, a wiper carrier mounted on said support topermit relative movement between the support and said carrier indirections lengthwise of the shoe, end embracing wipers mounted on saidcarrier for closing movement laterally of the shoe, and gearingconnections operated by movement of said support relatively to the wipercarrier as the support is moved toward the shoe to impart lateralclosing movement to the wipers.

10. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for bodily advancingmovement lengthwise of the shoe and also for closing movement laterallyof the shoe, and rack and pinion mechanism comprising intermeshingtoothed members relatively movable in response to resistance of the workto said bodily movement of the wipers to impart lateral closing movementto the wipers.

11. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for bodily advancingmovement lengthwise of the shoe and also for closing movementlatercomprising 'intermeshing toothed members relatively movable inresponse to resistance encountered by the wipers in engagement withtheshoe to impart lateral closing movement to the wipers.

12. In a machine of the class described,

the combination with shoe positioning means, of end embracing wipersmounted for bodil'y'movementlengthwise of the shoe and also for closingmovement laterally of the shoe, rack and pinion mechanism comprisingintermeshing toothed members relatively movable in'response toresistance of the work to said bodily movementof the wipers to impartlateral closing movement to the wipers, and controlling means for saidmech anism to cause the wipers to be closed inwardly into substantialconformity to the contour of the edge of the shoe bottom prior to anysubstantial overwiping action at the end of the shoe.

'13. In a machine of the class described, the combination with shoepositioningv means, of a wiper support, end embracing wipers movablymountedon said support to permit relative movement between the supportand the wipers in a direction lengthwise of the shoe in response toresistance of the shoe materials, said wipers being also mounted forclosing movement laterally of the shoe, and gearing connections operatedby said relative movement between the support and the wipers to impartthe lateral closing movement to the wipers.

14:. In a machine of the class described, the combination with shoepositioning means, of a wiper support, means for moving said supportlengthwise of the shoe, a wiper carrier movably mounted on said supportto permit the support to move relatively to the carrier lengthwise ofthe shoe in response to resistance of the work to the movement of thecarrier, end embracing wipers mounted on said carrier for closingmovement laterally of the shoe, pinions mounted on said carrier andconnected to the wipers, and means operated by said movement of thesupport relatively to the wiper carrier to turn said pinions and impartlateral closing movement to the wipers.

15. In a machine of the class described, the combination with shoepositioning means, of a wiper support, means for moving said supportlengthwise of the shoe, a wiper carrier movably mounted on said supportto permit the support to move relatively to the carrier lengthwise ofthe shoe in response to resistance of the work to the movement of thecarrier, end embracing wipers mounted on said carrier for closingmovement 1ater ally of the shoe, pinions mounted on said carrier andconnectedto the wipers to impart closing movement to the wipers, andrack bars on said support connected to said pinions to operate themthrough the movement of the support relatively to the carrier.

16. In a machine of the class described, the combination with shoepositioning means, of a wiper support, means for moving said supportlengthwise of the shoe, a wiper carrier movablymounted on said supportto permit the support to move relatively to the carrier lengthwise ofthe shoe in response to resistance of the work to the movement of thecarrier, end embracing wipers mounted on said carrier for closingmovement laterally of the shoe, pinions mounted on said carrier andconnected to the wipers to impart closing movement to the wipers, rackbars on the support connected to said pinions to operate them throughthe movement of the support relatively to the carrier, and spring meansfor holding said rack bars normally in stationary relation to saidsupport while permitting them to yield in response to resistance toclosing movement of the wipers.

17. In a machine of the class described, the combination with shoepositioning means, of end embracing wipers mounted for relative closingmovement laterally of the shoe. pinions connected to said wipers, rackbars connected to the pinions, and means for moving said rack barslengthwise of the shoe to turn the pinions and impart closing movementto the wipers.

18. In a machine of the class described, the combination with shoepositioning means, of a wiper support movable lengthwise of the shoe, awiper carrier movably mounted on said support, end bracing wipersmounted on said carrier for closing movement laterally of the shoe,spring means between said support and carrier to render the carrieryieldable against advancing movement in response to resistanceencountered by the edges of the wipers, and connections between saidsupport and carrier responsive to such yield of the carrier to impartlateral closing movement to the wipers.

19. In a machine of the class described, the combination with shoepositioning means, of a wiper support movable lengthwise of the shoe, awiper carrier movably mounted on said support, end bracing wipersmounted on said carrier for closing movement laterally of the shoe,yielding means for normally maintaining said carrier in an advancedposition relatively to the support while permitting the carrier to yieldagainst advancing movement in response to resistance of the work, andgearing connections between said support and carrier for impartinglateral closing movement to the wipers proportional to the extent ofrelative movement of the support and the carrier as the carrier yields.

20. In a machine of the class described, the combination with shoepositioning means, of a wiper support movable lengthwise of the shoe, awiper carrier movably mounted on said support, end embracing wipersmounted on said carrier for closing movement laterally of the shoe,yielding means for normally maintaining said carrier in an advancedposition relatively to the support while permitting the carrier to yieldagainst advancing movement in response to resistance ot' the work, andmeans dependent upon resistance encountered by the wipers in engagementwith the shoe for in'iparting lateral closing movement to the wipersproportional. to the extent of such relative movement of the support andthe carrier as the carrier yields, said yielding means being soconstructed to control the closing movement of the wipers as to causethem to wipe the upper inwardly at the end and the sides substantiallysimultaneously.

21. In a machine of the class described, the combination with last andupper positioning means, of means for pulling the upper over the lastandfor holding it under tension, end embracing wipers mounted for bodilymovement lengthwise of the shoe and for closing movement laterally ofthe shoe to wipe the upper into lasted position, means responsive toresistance encountered by the wipers upon their engagement with thetensioned upper held by the pulling means for imparting lateral closingmovement to the wipers, and means operative in time relation to theoperative movement of the wipers to cause said upper pulling means torelease the upper.

22. In a machine of the class described, the combination with last andupper positioning means, of meanstor pulling the upper over the last andfor holding it under tension, wiper support mounted for movementlengthwise of the shoe, end embracing wipers carried by said support andarranged to yield against advancing movement as their edges encounterthe resistance of the upper held by the pulling means and to advancefarther ior wiping the upper inwardly at the endol the shoe when saidresistance is removed, means operated by continued movement of the wipersupport upon such yield of the wipers to close the wipers inwardlaterally of the shoe, and means for causing said upper pulling means torelease the upper when the wipers have been closed into substantialconformity to the contour of the edge of the shoe bottom.

23. In a machine of the class described, the combination with last andupper positioning means, of means for pulling the upper over the lastand holding it under tension, a wiper support mounted for movementlengthwiseof the shoe, a wiper carrier movably mounted 011 said supportand arranged to yield in response to resistance of the work, endembracing wipers mounted on said carrier for closing movement laterallyof the shoe, gearing connections between said support and carrier forclosing thewipers in response to yield of the carrier, and meansoperative in time relation to the movement of the, wipers to cause theupper pulling means to release the upper.

In testimony whereof I have signed my name to this specification.

CHAR-LES F. PYM.

